package org.glassfish.el.test;

import java.util.List;
import java.util.ArrayList;

public class DataBase {

    private int curCustomer = 100;
    private int curProduct = 200;
    private int curOrder = 10;
    private boolean inited;

    private List<Customer> customers;
    private List<Product> products;
    private List<Order> orders;

    public List<Customer> getCustomers() { return this.customers; }
    public List<Product> getProducts() { return this.products; }
    public List<Order> getOrders() { return this.orders; }

    public void init() {
        if (inited) {
            return;
        }

        inited = true;
        customers = new ArrayList<Customer>();
        orders = new ArrayList<Order>();
        products = new ArrayList<Product>();
        initCustomer();
        initProduct();
        initOrder();
    }        

    void initCustomer() {
        c("John Doe", "123 Willow Road", "Menlo Park", "USA",
                    "650-734-2187");
        c("Mary Lane", "75 State Street", "Atlanta", "USA", "302-145-8765");
        c("Charlie Yeh", "5 Nathan Road", "Kowlon", "Hong Kong", "11-7565-2323");
    }

    void initProduct() {
        p("Eagle", "book", 12.50, 100);  // id: 200
        p("Coming Home", "dvd", 8.00, 50);  // id: 201
        p("Greatest Hits", "cd", 6.5, 200);  // id: 202
        p("History of Golf", "book", 11.0, 30);  // id: 203
        p("Toy Story", "dvd", 10.00, 1000);  // id: 204
        p("iSee", "book", 12.50, 150);  // 205
    }

    void initOrder() {
        o(100, new Date(2010, 2, 18), 20.80);
        o(100, new Date(2011, 5, 3), 34.50);
        o(100, new Date(2011, 8, 2), 210.75);
        o(101, new Date(2011, 1, 15), 50.23);
        o(101, new Date(2012, 1, 3), 126.77);
        o(102, new Date(2011, 4, 15), 101.20);
    }

    void c(String name, String address, String city,
                  String country, String phone) {
        customers.add(new Customer(curCustomer++, name, address,
                                   city, country, phone));
    }

    void o(int customerID, Date orderDate, double total) {
        Order order = new Order(curOrder++, customerID, orderDate, total);
        this.orders.add(order);
        findCustomer(customerID).getOrders().add(order);
    }

    void p(String name, String category, double unitPrice, int unitsInStock) {
        products.add(new Product(curProduct++, name, category, unitPrice,
                                 unitsInStock));
    }

    private Customer findCustomer(int id) {
        for(Customer customer: customers) {
            if (customer.customerID == id) {
                return customer;
            }
        }
        return null;
    }
}

